Adding-machine.



No. 800,210. PATENTED SEPT. 20, 1905. 0. N. HINOHMAN.

2 SHEETS-SHEET l.

wnwssfs: l/VVE/VTUR G. N. Hinchman. B y 71% MM m n um.

No. 800,210. 'PATENTED SEPT. 20, 1905. 0. N. HINOHMAN. ADDING momma.

APPLICATION FILED NOV. 7,1904.

2 SHEETS-SHEET 2.

Fig.3

WITNESSES: INVENTOH UNITED STATES PATENT OFFIOE.

GEORGE N. HINOHMAN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE STANDARD ADDING MACHINE COMPANY.

A CORPORATON OF MISSOURI.

OF ST. LOUIS, MISSOURI,

ADDING-MACHINE.

Specification of Letters Patent.

Patented Sept. 26, 1905.

A lication filed November '7, 1904:. Serial No. 231,653.

To all whmn it nuty concern:

Be it known that I, GEORGE N. HINOHMAN, acitizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Adding-Machines, of which the following is such a full, clear, and exact description as will enable any one skilled in the art to which it-appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to improvements in adding-machines, and more particularly to that class of adding-machines in which the carriage or other translating device operates to place a set of numeral-keys successively in engagement with adding and printing devices corresponding to the different numerical orders.

The principal object of my invention is to so construct a machine of the class described that it can be used to print common fractions as well as integers.

While my invention is particularly intended for use in adapting an adding-machine of the class described to print common fractions, it will be understood that it may be used for other purposes in which it is necessary to vary the ratio of transmission of movement between the keys and the adding devices such, for instance, as in adapting a machine for use in connection with the British monetary system.

In the accompanying drawings, which illustrate so much of an adding-machine as is necessary to set forth my invention, Figure 1 is a vertical section. Fig. 2 is an enlarged sectional view showing a detail of construction. Fig. 3 is an enlarged view of some of the parts shown in Fig. 1. Fig. 4: is a side view of a part of the frame of the machine, and Fig. 5 is a top view of the keyboard and adjacent parts.

Like marks of reference refer to similar parts in the several views of the drawings.

The adding machine in connection with which my improvements are shown is substantially like that shown in Patent No. 683,939, granted to W. V. Hopkins October 8, 1901, and hence the mechanism of the machine will not be minutely described.

is the base of the machine, and 11 the easing. Secured to the base 10 are two front side frames 12, two rear side frames 13, and

two intermediate frames 14:. Secured to the frames 13 and 14 are a pair of upper side frames 15, by which are supported the carrying-bars 16 and other carrying mechanism. Pivoted to the frames is a swinging frame 17, carrying the adding mechanism consisting, primarily, of the adding-wheels 18. Secured in the intermediate frames 14: are printing-wheels 20, to each of which is secured a spur-wheel 21. In these side frames are also secured the intermediate wheels 22, which mesh with the wheels 21 on the printing-wheels and also with the adding-wheels 18.

23 is the carriage-wheel or translating device, which is moved step by step from order to order, so as to successively connect the intermediate wheels 22 of the various numerical orders with the numeral-key bars 24.

25 is the carriage, which is connected with the carriage-wheel 23. The carriage 25 is secured to a pivoted arm 26, Fig. 5, and is moved in one direction by this arm through the medium of order-keys 27 in order to determine the order in which a number is to begin. The arm 26 is pivoted at 28, as shown in Fig. 5.

The carriage is moved step by step in the opposite direction by means of the numeralkeys 2% in writing the number. As the mode of operation in writing in and adding numbers in the various integral orders is the same as that of the machine shown in the patent to Hopkins, above referred to, the same will not be particularly described.

In order to adapt the machine for printing and adding common fractions, I use the second right-hand set of printing and. intermediate gears for the units place and reserve the extreme right-hand order of the machine for a fractional order. In adapting this extreme right-hand order of the machine for writing fractions 1 dispense with the usual adding-wheel 18 in the right-hand order and substitute therefor a star-wheel 30, containing sixteen teeth. To this star-wheel I secure a small gear-wheel 31 containing thirty-two teeth. I also secure to the intermediate wheel 22 of the right-hand order a small gear-wheel 32 containing forty teeth. These wheels 31 and 32 are out of mesh, and in order to connect them, and at the same time secure the rotation of the star-wheel in the proper direction, I provide two small idle wheels 33 32. These two wheels also mesh with each other. The wheel 33 is mounted on a stud 35, secured in a lug 36, carried on the addingwheel frame 17, and the wheel 34 is mounted on astud 37, carried by theintermediate frame 14, so that it will be evident that when the adding-wheel frame 17 is raised to lift the adding-wheels out of engagement with the intermediate gears the wheels 33 and 34 will be separated. The star-wheel 30 is provided with two cars 38 for actuating the carrying mechanism. The said star-wheel 30 is prevented from rotating, when the adding-frame is lifted, by means of a pawl 39, held in posi tion by a spring 40. The pawl 39 is pivoted on a stud 41, carried by the adding-wheel frame 17, and the end of the spring 40 is secured to a pin 42, carried in said frame. The printing-wheel 20 of the extreme right or fractional order is provided with printing characters which are fractions running by eighths, from 1 to i in each direction. The central part of this wheel, or that normall y standing in front of the printing-hammer 44, instead of being provided with a Zero, as in the other wheels, is provided with a blank space 45. In order to prevent the hammer from striking against this blank space when the wheel is not moved, I provide the hammer with apin 46 and secure to the side frame 14 a stop 47, which is adjusted to such a position that it will prevent the hammer 44 from striking against the blank space 45, but will allow it to strike against the numerals upon the wheel in order to print the fractions. In printing the fractions in the extreme righthand or fractional order the same numeralkeys are used as in printing integers. The keys are provided with two sets of numbers, one fractional and one integral, as shown in Fig. 5. As the 8 and 9 keys are not used in the extreme right-hand or fractional order, it is desirable to provide'some means for preventing the operation of these keys when the machine is operating in this order. To accomplish the locking of these keys when the machine is in the fractional order, I provide a U-shaped locking device 50, as best shown in Fig. 2. This locking device 50 is mounted on a lug 51 by means of astud 52, passing through a slot 53 in the locking device and into said lug. The locking deviceis normally held in the position shown in Fig. 2 by means of a spring 54, secured at one end of the said locking device and at the other to a pin 55, secured in the base of the machine. WVhen the locking device is in its normal position, the 8 ant 9 key-bars can be operated. When, however, the carriage has reached its extreme position to the right, so that the machine is operating in-the right-hand or fractional order, an L-shaped projection 56, carried by the arm 26, attached to the carriage,

comes in contact with an extension 57 on the locking device and moves the same to the left. so as to move the shoulders 58 below the 8 and 9 key-bars 24, so that the said bars cannot be operated while the machine is in this order.

In the operation of my machine the carriage 25 is positioned in the usual manner by operating the order-keys 27. The numeralkeys 24 are now operated. and when the machine is in the integral orders the entire operation of the machine is identical with that described in patent to Hopkins above referred to. \Vhen, however, the extreme right-hand or fractional order is reached, if key No. 1 be depressed the'right-hand intermediate gear 22 will be moved the same distance as would the intermediate gear of any other order when operated by this key. The printing-wheel 20 of this order, however, is provided with, the printing character 1%, which will be brought into position to print t by this movement. At the same time the ratio of movement between the intermediate gear 22 and the star-wheel 30 is changed by means of the trains of gears 31, 32, 33, and 34. so that the star-wheel 30 in place of being moved through one-twentieth of a revolution, as would the adding-wheels of any other order, is moved through one sixteenth of a revolution. It will be evident from this that whenever fractions amounting to eighteighths have been printed the star-wheel 30 will be moved through one-half a revolution, and consequently one of the lugs 38 will actuate the carrying mechanism to carry one in the units order. If no key is struck in the fractional order, the stop 47 will prevent the printing-hammer 44 from driving the paper and ribbon against the blank space 45, and thus blurring the paper.

By varying the ratio of transmission of movement between the intermediate gears 22 and the adding devices I am enabled to maintain all the intermediate gears 22 of the same diameter and pitch, so that the translatingwheel 23 can mesh with all the said intermediate gears by merely moving the same across themachine without any swinging movement, such as would be necessary if intermediate gears of different sizes were used, such as are shown in British patent to Hopkins, No. 6,193 of 1894.

Having fully described my invention, what Iclaim as new, and desire to secure by Letters Patent of the United States, is'

1.. In an adding-machine, the combination,

with a set of numeral-keys, of movable members corresponding with the numerical orders and each controlled by each of said numeralkeys, adding devices actuated from said movable members, and means for varying the ratio of transmission of movement from said movable members to said adding devices.

2. In an adding-machine, the combination with a set of numeral-keys, of pivotally-movable members corresponding to the numerical orders and adapted to be moved through equal arcs by the same numeral-keys, adding devices actuated from-said movable members, and means for varying the ratio of transmission of movement from said movable members to said adding devices.

3. In an adding-machine, the combination with a set of numeral-keys, of gear-wheels corresponding to the numerical orders and each controlled by each of said keys, adding devices, and means for varying the ratio of movement transmitted from said gear-wheels to said adding devices.

4:. In an adding-machine, the combination with a set of numeral-keys, of a gear-wheel controlled by said keys and movable step by step, uniform intermediate gears corresponding to the numerical orders and actuated by said gear-wheel, adding-wheels, an auxiliary gear movable with one of said intermediate gears but containing a different number of teeth therefrom, and connections between said auxiliary gear and the corresponding adding-wheel.

5. In an adding-machine, the combination with a set of numeral-keys, of a gear-wheel controlled by said keys and movable step by step, uniform intermediate gears corresponding to the numerical orders and actuated by said first-named gear-wheel, adding-wheels, an auxiliary gear movable with one of said intermediate gears but containing a different number of teeth therefrom, a second auxiliary gear movable with one of said adding-wheels, and a pair of idle-wheels connecting said first and second named gears.

6. In an adding-machine, the combination with a set of numeral-keys, of adding mechanism controlled by said keys for adding integers, and an auxiliary adding mechanism controlled by the same numeral-keys for adding fractions.

7. In an adding-machine, the combination with a set of numeral-keys, of adding devices corresponding to the numerical orders, and a translating device for placing said numeralkeys successively in connection with the adding devices of the various orders, the adding mechanism of one of said orders being arranged to add fractions, and those of other orders being arranged to add integers.

8. In an adding-machine, the combination with a set of numeral-keys, of adding devices corresponding to the numerical orders, a translating device for placing said keys successively in connection with the adding devices of the various orders, and means for looking a portion of said numeral-keys when the keys are operated in a predetermined order.

9. In an adding-machine, the combination with a set of numeral-keys, of adding devices corresponding to the numerical orders, a translating device for placing said keys successively in connection with the adding devices of the various orders, a locking device for one or more of said keys, and connections between said translating device and said locking device for actuating the latter.

10. In an adding-machine, the combination with printing-hammers, of printing-wheels one of which is provided with a blank space normally facing the corresponding hammer, and means for preventing said hammer from striking said space.

11. In an adding-machine, the combination with a printing-wheel provided with printing characters and a blank space, of a printing-hammer for said wheel, and a stop preventing said hammer from striking said blank space but permitting it to strike said printing characters.

In testimony whereof I have hereunto set my hand and aflixed my seal in the presence of the two subscribing witnesses.

GEORGE N. HINOHMAN. [L. s.]

Witnesses:

FRED HENKE, D. G. BETJEMAN. 

